Surface heating or cooling apparatus.



PATENTED SEPT. 12, 1005.

A. W, BREWTNALL.

G APPARATUS.

SURFACE HEATING APPLA'I'ON FILED APR.1

www

PATENTBD SEPT. l2, 1905.

APPLICATION FILED APE.12,1905.

4 SHEETS-SHEET 3.

No. 799,621. ATENTBD SEPT.12,1905

A. W. BREWTNALL.`

SURFACE HEATING OR COOLING APPARATUS.

APPMOATION FILED Arn.1,1so5.

i SHEETS-SHEET 4 Q5 xxi/M; 5 y@ Qing@ y BREWTNALL, a subject of the King of Great Britain, residing nt Neweastle-upon-Tyne,.

^ open. 'The next chamber is formed between marily composed of indented plates placed tolously--t het is to say, when the plates are corvthe first chamber and the next adjacent plate, and 1n regard 'to this second chamber it is necvessnry to close the inter-spaces at theedges edges ot' the plates which are to be comi dispensing with inserted solid laars or the 'rien sfrnfrns ARTHUR WILFREI.) BREWTNALL, OF

SURFACE `-iiilliif ON Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed April 12, 1905. Serial No. 265,090.

fo @ZZ wil/rmt it may concern:

Be it known that i, ARTHUR Wnitnnn England, have invented certain 'new and useful lImprovements 1n Surface Heating or a specification.

The present invention refers to that type of gether surface to surface, so that the indented surfaces of one plate are in Contact, or nearly so, with the adjacent plates, and in which, when the indentations are formed continurugoted-the eorrugations of one plate extend in a diverse direction to the corrugations of the next adjacent plate. 1n such a structure it is necessary to lclose the interspaces st the' edges upon the two sidesoi' the iirst pnir of plates, leaving the interspaces at the edges upon the two ends of the vfirst pair of plates the external surface of one et' the plates of upon the two ends while the two opposite sides are left open. When this is done, one oi' the mediums-say steam---lcan be passed in one direction between a pair of plates, while the other niedium---saycooling-wetencan be passed-between the outer surface of one of "such plates and the next adjacent plate inan oppositedirection, and so on, one medium thus passing through alternate chambers in an opposite direction to the other medium. 'lnsuch apparatus it hnsbeen heretofore proposed to effect vthe complete closure of the' inter-spaces' by the insertion between such edges oi' a. solid strip ot' metal orto keti'ect such closure by running molten metal-.between the said edges.' '.lhose inter-spaces to be left open had inserted hetween'them a bar, formed-with serrntions or. the like, through which the medium was to pass to sind from the interior ,of the apparatus. l

Now the present invention primarily refers to an improved construction whereby those pletely closed are brought into surface contact and @held together by pressure, thereby running of molten metal between such edges and producing a Joint oi simple'and4 perfect character, while, on the other hand, those interspnces between the edges of the plates which are to be left open afford very easy entrance and exit for the passing medium. At the sume time the construction according' to the present invention permits of the plates being very readily separated one from an otherfor the purpose of cleaning Qg'repair.

An example of construction of apparatus according to this invention is illustrated in the accompanying drawings, whereon- Figure 1 shows one of the plates employed in constructing such appara! -in vertical longitudinal section on the line X Y of Fig. 3. Fig. 2 is a similar section on the line X' Y of Fig. .f3-that is, at right angles to the section at Fig. l; and Fig. 3 is a-plan view of such a plate, central portions being broken away for economy of space. Fig. 4 shows a pair of such plates placed together' to form a chamber according to this invention. Fig. 5 is a perspective view showing a corner portion of sever-alot such chambers arranged in conjunction. Fig. (i is an elevation showing n bunch of plates secured together, and Fig. 7 is a perspective view of one of the skeleton distanceizie'ees detached. Figs. 8 and 9 show an example of construction of n. casing suitable for containing the bunches of chamber-forming plates, Fig. 8 being a half longitudinal section and half side elevation, and Fig. 9 is a plan view, Athe left-hand halfof same showing the top cover removed.

According to this invention and referring to Figs. l, 2, and 3, the corrugated or equiva- ,lent formations 1 in any plate (which is to form one of a series) are not allowed to extend to anyoi the edges of that plate, and

posite margins, or, as 1 will term them, tw0` opposite "side margins 2 3, are in a different but parallel plane to the plane of the end margins, the example in the drawings illus'- trating the side mnrginsQ 3 formed ilush with the 'spices of the corrugations on the upper surface oil the plate, while the two opposite plain margins 4 5 at the ends of the plate are made flush with the spices of the corrugations on the under surface of the said plete. Each plate is of similar formation, and two of such plates are then placed surface to surface in contact, or nearly so, so as to bringtwo opposite side margins Q 3 of one plate into abselute surface Contact with the two opposite side IOO margins of another similar plate, as is shown at Fig. 4 of the drawings, and then it will be found that the two opposite end margins of f the plates will not bein contact, but will pre-v sent-free spaces for the passage of one of the mediumsmsay a cooling mediumY in between he corrugations of the two plates, which corrug-ations in the construction illustra-ted extend in diverse directions, being in Contact only at their crossing-points. Upon such a structure composed of twoplates, as at Fig. 4, and forming one chamber l place a third plate of precisely similar,construction to the plates described and so placed that its end margins are in surface contact withy the end margins of the plate upon which it is placed, leaving a space between the side m..rgins of the latter plate -and the said third plate for the passage of, say, the medium to be cooled. Other plates are arranged one upon another until a bunch of plates of the requisite number have been so built up. A corner portion of several chambers .so built up is illustrated in perspective at Fig. 5, from which it will be understood that the two plates,

which l have marked 6 T, forming one cham ber, have their side margins 2 2 and 3 3 in absolute cont-act, while both the end margins t t and 5 i) of the same plates are at a distance from each other, so that fluid can pass in between the end margins of this chamber while the side margins are closed to the passage of the said fluid. The next chamber in the drawings at Fig. 5, below that formed by the plates 6 T, is precisely similar in every respect; but by placing the two `chambers so formed in surface contact, as shown. it will lbe seen thatv between the two chambers the intermediate chamber is formed, the sides 8 of which are open, while the ends are clo'sed, and therefore the medium-*say the medium to be cooled-W will be free to pass in at the sides 8 of this intermediate chamber from one end to the other thereof, so that ad jacent equal and alternate chambers are formed for the two mediums-say steam to be condensedfand cooling-witten the said mediums' passing through those alternate chambers in opposite' directions to each other. Such a structure is litted with solid distance-blocks 9, (see Figs. and 6,) inserted between the corners, and these distance-blocks 9 may be attached to each plate separately by soldering, riveting, or other means before the plates are ssern.; bled, thesaid corner-blocks 9 being faced olf to the proper level and serving when the plates are so assembled into a bunch to carry' the contacting margins continuously to the opposite edges of the plates. At the openingsl to the respective chambers skeleton distance-pieces 10 are inserted which no't only maintain the said openings uniform, but, as will be hereinafter seen, also serve the ofliee ot' aiding in the clamping together of those freins ot' the plates which are in actual surdirection.

face contact with each other. These skeleton distance-pieces 10 may, as shown, be formed by a dentor crimped metal vbar or strip or may consist of a serrated or pierced bar'; but the said distance-pieces should be such as to present large passage-ways 10 and offer the least possible obstruction to the passage of the medium into and out of the chamber. The

structure is then placed between two end clamping-plates. such as 11 12, Fig. 6, which clamping-.plates should be of sulllcient strength and rigidity, and these two clamping-plates 11- 12 are held together by bolts or pressure-screws 13, as shown, and if found requisite the contacting margins of the plates may have any suitable packing inserted between them, and the pressure applied by the clamping-plates forms agood and tight joint between the edges of the plates, whileat the same timethe plates composing the bunch may be readily separated for cleaningv or repair.

Bnnches of plates such have been def scribed with reference to Fig. 6 are then placed 1n any convemently-constructed casing,

so that one medium-say the medium to be cooled-is passed into and through alternate chambers in one direction, while th'e other medium-say the cooling mediumM-is passed through alternate chambers in an opposite In order to render the invention capable of being easily carried into practice, a form of such a casing is shown by way of example at Figs. 8 and 9. 'lhis casing 'consists'of' a box-like body 14, into which six bunches 15 of the described plates are placed and rest on internal flanges 1G of the casing` The lbody 1a of the easing upon each side is formed with 'a tubular communication, (see Fig. 9,) one such', marked 1T, serving', for instance, as the inlet for the cooling-water when the apparatus is used as a condenser, while the other communication, 18. serves for the voutlet for the cooling-water, and in its passage the cooling-water entering by the channel 17 hasfree admittance to one edge of the series of bunches of. plates and passes through in between those alternate pairs of plates, finding its exit on the opposite side by' the tubular communication 18. The top and bottorn covers 19,20 of the casing 14 are formed the one with an inlet by which steam to be condensed enters and the other with an exit.`

The steam has admittance to the top edge of the bunches of plates andpasses between the alternate pairs of plates, finding its exit in the bottom'cover 20 by the exit-passage there provided after having been brought into very intimate proximity with the cooling medium,

roo

TIO

such plates being placed with their surfaces in contact, or nearly so, so that the plain margins-at the sides et the first two plates in surface con tact, while the plain margins at the ends are separated., the next plate being placedso that its plain end margins are in surface contactwith the plain end margins of the adjacent plate while its side margins are at a distance from the side margins of the adjacent plate, and so on, distance-blocks located at the corners between the plates, skeleton distance-pieces located between the separated edges el' the plates, and means for clamping the collection et' plates together to t'orm fluid-tight joints between the contacting Inargins ot' the plates; whereby alternate chambers are 'formed for the passage in one'direction of the cooling medium, while the medium to be cooled passes in an opposite direction through the remaining alternate chambers.

2. ln surface hcatingor cooling apparatus; the combination ot' a number ol indented 0r corrugated plates of equal size, each plate having aplain margin at all its edges, the plain margins at the sides thereof being in a different parallel plane te the plain margins at the ends of the same plate, a number of such plates being placed with their surfaces in Contact or nearly so, so that the plain margins at the sides of the tirst two plates are in surface Contact, while the plain margins at the ends are separated, the next plate beingplaced so that its plain end margins are in surface contact with the plain end margins ot' the adjacentlplate, while its side margins are at a distancelfrom the side margins otl the adjacent-plate, and so on, distance-blocks located at the corners between the plates, skeleton distance-pieces located between theseparated edges of the plates, means for clampingl the collection ot' plates together to form fluidtight joiints between the contacting margins et' the plates, and means fon directing the ilow o t' one medium to'be heatedor cooled throu, ;h`

one series of alternate chambers formed between the plates, and the opposite medium through the other adjacent alternate chambers.

3, in surface heating or cooling apparatus;l

the combination of a number oi indented or corrugated plates ot equal size, each plate atl the ends et' the same plate, a number ot' such plates being placed with their surfaces in contact, or nearly so, so that the plain margins at the sides ot' the lirst two plates are in surface contact while the ilain margins at the ends., :separat-ed, the next plate being placed so thatlits plain end margins are 1n surtace contact with the plain end margins of the adjacent plate while its side margins are at a distance from the side margins oi the adjacent plate, and so on, distance-blocks located at the cornersr between the plates, skeleton distance-pieces located between the separated edges of the plates, a clamping-plate located on the outer surface ot' each end plate of a bunch, means for drawing together the clamping-plates to clamp the structure to form fluid-tight joints between the contacting mar-v gins of the plates, and means for directing the flow of one medium through one series of alternate chambers formed between the plates and the opposite medium through the other adjacent alternate chambers.

4. In surface heating or l,cooling apparatus; the combination of a number of corrugated plates of equal sizes superposed one upon-another with the apices nfl/the eorrugations in contact and 'extendingin diverse directions, a

plain margin round all the edges of each plate, the-plain margins at the sides thereof being in a different parallel plane to the plain margins at the ends ofthe same plate, anurnber of such plates being placed with their surfaces in contact as aforesaid so that vthe plain margins at the sidesof the first two plates are in surface contact, while the plain margins at the ends are separated, the next plate being placed so 4that its plain end margins are in surface contact with the. plain end margins of the adjacent plate, while its 4side margins are at a distance from the side margins ot' the adjacent plate and so on, distance-blocks located at the corners between the plates to continue the plain side margins tothe ends of the plates, skeleton distancepieces located between the 'separated edges of the plates, a-clamping-plate located on the outer surface oi each end plate ot' a bunch,

means for drawingtogether the clampingf plates to clamp the structure together to form iiuid -tight joints between the contacting margins of the plates, and means for directing the ilow of one medium through one series of alternate chambers formed between the plates and the opposite medium through the other adjacent alternate chambers.

5.. In surface heating or cooling apparatus; the combination of a number of indented or corrugated .plates of equal size, each plate having a plain margin at all its edges, the plain margins at the sides thereof being in a dillere'nt parallel plane to the plain margins at the ends of the same plate, a nuniber of suoli plates being placed with their sirfaces in contact, or nearly so, so that the plain margins at the sides ot' the iirst two plates are in surface contact while the plain margins at the ends are separated, the next plate being placed so that its plain end margins are in surface contact with the plain end margins of the adjacent plate while its side margins are at a distance from the side margins ot' the adjacent plate, and so on, a distance-block fixed ou one side and at each corner of each plate to two opposite plain margins thereof and faced off level with the other twoopposite margins to continue the latter plain margins to the ends of the plates, skeleton distance-peces composed of a crimped metal str-ip located between the separated edges of the plates to hold the saine at the proper distance apart, a clamping-plate located on the outer surface of each end plate of a bunch, and pressurescrews for drawing together the clampingplates to clamp the structure to form luid# conducting one medium in one direction through the alternate chambers of the bunches,

Ils

and conduits to the casing for conducting the other medium in an opposite direction through the remaining alternate' chambers of the bunches.

ARTHUR WILFRED BREWTNALL. litnesses: l

GRIFFITH BREWER, THouAs W. ROGERS. 

